Folder: `services/notifications/`

this folder is one drawer in the backend filing cabinet.

fcm-sender.service.ts

Path: src/services/notifications/fcm-sender.service.ts

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FCM SENDER — deliver push notifications via Firebase Cloud Messaging

Path: src/services/notifications/notification-metrics.service.ts

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NOTIFICATION METRICS — admin dashboards for push campaigns

Path: src/services/notifications/notification-templates.ts

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NOTIFICATION TEMPLATES — push title/body copy (EN + HI)

Path: src/services/notifications/record-notification-open.service.ts

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RECORD NOTIFICATION OPEN — analytics when user taps a push

Path: src/services/notifications/send-due-reminders.service.ts

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SEND DUE REMINDERS — “you have revisions due” push campaign

Path: src/services/notifications/send-streak-warnings.service.ts

Header from code: send-streak-warnings.service.ts

SEND STREAK WARNINGS — evening push if streak at risk (no practice today)